Unformatted text preview: (b) Find the potential energy (kJ) of the airplane. (c) What will be the final velocity (m/s) of the airplane if the kinetic energy is increased by 10,000 kJ without any change in elevation? SP5: 1 kg of air expands at constant temperature of 27 C in a pistoncylinder device when its specific volume changes from 0.05 m 3 /kg to 0.1 m 3 /kg. Assume that air satisfies the relation, Pv = RT, where R = 0.287 kJ/kgK. (a) Determine the quasiequilibrium work done (kJ/kg) during the process. (b) What is the total work done (kJ/kg) assuming a frictional force of 5000 N acts through 0.25 m during the piston motion? (c) Is the work done to overcome the frictional force quasiequilibrium? Explain....
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 Fall '08
 GAL
 Energy, Kinetic Energy, Mass, Potential Energy, Velocity, special problems

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